Which statement is NOT true regarding the requirements of survival craft portable two-way VHF radiotelephone equipment?

The statement about operation on Channel 13 being not true is understandable when considering the specific requirements for survival craft portable two-way VHF radiotelephone equipment. This equipment is indeed required to operate primarily on Channel 16, which is the internationally recognized distress and calling frequency for maritime communication.

Channel 13 is designated for bridge-to-bridge communications and is not a primary channel for survival craft communication. Thus, stating that survival craft portable VHF equipment operates on Channel 13 misunderstands the operational guidelines mandated by maritime safety protocols.

The requirement for effective radiated power of a minimum of 0.25 Watts is accurate and ensures that the equipment can communicate effectively in emergencies. Simplex voice communications is also a standard practice for such equipment to facilitate straightforward, clear communication during critical situations. Therefore, the claim about Channel 13 is indeed correct as being not true in this context.